Question

Answer fast my H.W is hard

Answer 1

Answer: The molality of
`MgF_2` solution is 4.013 m

Step-by-step explanation:

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg.

The formula used to calculate molarity:

.....(1)

Given values:

Given mass of
`MgF_2` = 20.0 g

Molar mass of = 62.3 g/mol

Mass of solvent = 80.0 g

Putting values in equation 1, we get:

`\text{Molality of }MgF_2=(20.0* 1000)/(62.3* 80.0)\\\\\text{Molality of }MgF_2=4.013m`

Hence, the molality of
`MgF_2` solution is 4.013 m